32001239947 has 2 divisors, whose sum is σ = 32001239948. Its totient is φ = 32001239946.

The previous prime is 32001239903. The next prime is 32001239971. The reversal of 32001239947 is 74993210023.

It is a strong prime.

It is an emirp because it is prime and its reverse (74993210023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32001239947 - 2¹¹ = 32001237899 is a prime.

It is not a weakly prime, because it can be changed into another prime (32001233947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16000619973 + 16000619974.

It is an arithmetic number, because the mean of its divisors is an integer number (16000619974).

Almost surely, 2^32001239947 is an apocalyptic number.

32001239947 is a deficient number, since it is larger than the sum of its proper divisors (1).

32001239947 is an equidigital number, since it uses as much as digits as its factorization.

32001239947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 32001239947 in words is "thirty-two billion, one million, two hundred thirty-nine thousand, nine hundred forty-seven".